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Author: Stephen Guilfoyle

Stephen "Sarge" Guilfoyle is the founder and President of Sarge986 LLC, a family run trading operation. An NYSE floor trader for over 30 years, Guilfoyle has served as the Chief Market Economist for Stuart Frankel & Co., the U.S. Economist for Meridian Equity Partners, and as a Vice President in Block Trading and Investment Banking with Credit Suisse over the years. Guilfoyle earned his nickname “Sarge” while serving as an actual sergeant in reserve components of the U.S. Marine Corps, and U.S. Army while simultaneously working on Wall Street. He self-identifies as a day trader, long-term investor, and anything in between. He believes in removing the emotion out of the decision-making process and trusting the data. Look to Guilfoyle to prepare you for the trading day with his popular early morning Market Recon newsletter on TheStreet Pro, which provides a mix of fundamentals, technical analysis, economic commentary and trading ideas.

CrowdStrike Just Popped. Here’s My Plan and Why I’m Upping the Price Target.

Avatar photo Stephen Guilfoyle on September 15, 2026

CRWD

CRWD gained 13.9% on Monday, then traders took some profits. But the roof has not fallen.

Buying More Rocket Lab After $1.9 Billion Acquisition Update

Avatar photo Stephen Guilfoyle on September 15, 2026

The aerospace firm announced a at-the-market share sale.

Feeling the Weight of the Market

Avatar photo Stephen Guilfoyle on September 15, 2026

Investors must now adapt to a changing environment as we approach the midterms, the fighting with Iran continues, and we’re getting AI warnings.

Our Small-Cap Holding Makes $205 Million Acquisition

Avatar photo Stephen Guilfoyle on September 14, 2026

Plus, we’re buying more shares of these two names.

Why I Bought Nvidia Into Monday’s AI Panic

Avatar photo Stephen Guilfoyle on September 14, 2026

The AI selloff has investors running. I’m doing the opposite.

AI Alarm Rattles the Cages as a Big Fed Decision Awaits

Avatar photo Stephen Guilfoyle on September 14, 2026

Amid dystopian worries and calls for a slowdown, AI leaders speak out. Oh, and we’ve got some other stuff happening too.

Oracle Remains a Fiscal Train Wreck

Avatar photo Stephen Guilfoyle on September 11, 2026

The software firm is still uninvestable after earnings.

Trimming 2 Disappointments, Eyeing 4 Buys

Avatar photo Stephen Guilfoyle on September 11, 2026

Trading Stocks

Here’s our trading plan for Friday and updates on key holdings.

A Day I Wish I Could Forget

Avatar photo Stephen Guilfoyle on September 11, 2026

It’s been twenty-five years since 9/11, but that doesn’t make it any easier thinking about that painful day.

AeroVironment at a Crossroads After Impressive Earnings

Avatar photo Stephen Guilfoyle on September 10, 2026

At a crossroads

The defense contractor turned some heads on Wall Street with surprising results.

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